[P2/Tycho] Honor the parameter "autoIncludeRequirements" in Tycho

[fedejeanne]

Behavior

In PDE there is a boolean parameter called autoIncludeRequirements that controls whether or not transitive dependencies are added to the product (see this PR: eclipse-pde/eclipse.pde#7).
This parameter doesn’t exist in Tycho, transitive dependencies are always added to the created product.

Expected behavior

Tycho should have a similar parameter and/or honor the existing parameter in PDE so that one can choose not to add transitive dependencies when building a product with Tycho (in Jenkins).

Additional info

The current behavior of Tycho is the same as if autoIncludeRequirements=true we want the behavior of autoIncludeRequirements=false.
This is not a pressing matter for Hannes Wellmann so it’s currently not planned (see eclipse-tycho/tycho#1056 (comment) and eclipse-equinox/p2#76 )

Criteria for ready

• Do we want to implement this?
• Contact VIKAMBL and ask if this is a pressing matter. Prioritize accordingly.

[HeikoKlare]

Please remove PPT-internal/-related information from the public issue. This backlog is supposed to represent public-value information independent from PPT specifics.